I'd recommend doing a youtube search for Donna Eden Energy Medicine 101, it's about an hour long but will help with your issues.
do you ground (i.e. connect consciously to healthy, divine Earth energies)? That should at least replenish energies which are lost.
I also ask to be connected through all my chakras, Hara, Kundalini and Soul Star to divine, healthy energies - to cleanse out negative energies, replenish any lost, heal etc.. 24/7 if need be (I leave that decision up to my helpers (they know I want to suffer as little as possible)).
You can also ask for your energies to be 'medicated' - i.e. anything that is being 'sucked off', will include some 'anti-sucking-off' energies in it, which might not help asap, but long term.
Furthermore you can pray for your mum to be 'hooked up' to more divine healing and replenishing energies (even better teach her how to do it herself), so that she does not need to take other people's....
Furthermore ask for protections, as best as possible, and regularly cut any unhealthy cords....
Verbally you can use a mantra/ prayer: 'I forgive myself, I forgive my mum, I let go in love, and ask for perfect relationship healings. Thank You. Amen!' (The I let go in Love is optional. More suited for a person you want out of your life, so likely not your mum)
All the best!
'Ask and it is given' (- well if we ask for harmonious stuff it is given, so energy for wellbeing and healing is definitely included). I.e. if we ask to be connected to ultimate good divine energies, - they come to us, find us, connect to us. It is basically the same for grounding, as you pray to divine energies in Earth. But you can also visualize two pillars of Light, coming up from deep in the Earth, and connecting to your heels. Then ask them to pull out negative and stale energies, and give you fresh, healing energies up..... It might take a few times before you 'feel' it, but you will if you keep with it. For me grounding, when it is strong, it feels like my feet are being sucked to the floor (but that might different for others...)
Feel free to peruse my blog as well, it's got a few more tools in it - http://empathcommunity.eliselebeau.com/profiles/blogs/my-empath-experiences-and-empath-tools-for-healing
hehe, well, we have to be realistic as well. If fighting is the lesser of the two evils.....
if you do the visualizations, then they happen, but it does not mean that one has to 'feel' the effects straight away. I used to not be able to e.g. 'feel' my chakras, but persisted, and now it is no problem. In some cases there might be outside blocks/ forces trying to stop the connections - so just ask for them to be removed, always. (and in the mean time, hug some trees, or lay on the ground, if those tools help you already to ground).
Using spiritual tools can be a bit like going to the gym, they have to used regularly, to start to look different, and feel different Try to be patient, and ask for patience.
Have you tried talking to your mum, about how you feel in her presence? Try to discuss with her, why you might feel that way, and ask her how she feels? Maybe there is other dynamics at work? Have you tried meditating on the situation yourself, to understand what is happening exactly, and if there might be a reason for it (not saying that there always has to be one). If it is possible to talk to her about these things, she is open to using spiritual tools, and she is so low on energy, she needs to leech yours, it is actually her, who would benefit most from using tools, that could help her regenerate her energies....
I generally ask for protections for myself, but also for protections for the outside, against any confused energies I might still generate, or which might come through me.
Last but not least - the supplement that helped me most in the past, helped me overcome chronic fatigue is fact - is Vit D. So if you , and or your mum, might be low on it - taking enough of it, might be a really easy fix!