I feel hesitant writing this. First of all, you are lucky to have had a loving mother.
But please remember, the love that you have for her arose somewhere in time and thus is prone to decay and dissipation. It is a formation (sankhara) ,and like all formations, is ultimately impermanent, unsatisfying and devoid of self. I understand that it may be very strong such that it seems permanent to you right now, and the most beautiful and the most important thing ever.
If you can make yourself see clearly in the present moment the arising and the changing of this love towards your mother, you may see the 3 marks in it and get free from it. This is much easier said than done and I myself am in the same situation as you, but please let's have faith that it will happen slowly but surely. See it this way: if your mother could/can see clearly, she would rather want you to be free of craving/suffering than to be born as her son again.
Hope that wasn't too harsh and hope it helped. Be well