Are we to serve endlessly?

[einmal]

The desire to serve greatly outweighs performed action in my opinion (if the goal is to be harvestable to 4D).

Even if you fail in your intent to make her happy, you provide other-self (in this case your Mother) with catalyst. Thus you serve her (and you'll see so: yourself) regardless. Could you imagine how hard it would be for her to progress in constant nirvana (i.e. if you were capable of sustaining her happiness for her indefinitely?) You would be depriving her of catalyst with which to polarize.

Also catalyst: When she's not happy despite your attempts to be kind and giving and charitable, or perhaps misunderstands those. You can reflect on that and it is hugely helpful to reflect on things that "stir you up" emotionally.

There is more love in the fact that you want to serve. But like others have said, balance is key. You must feel well also if you are to serve most efficaciously. Otherwise (and this is just my opinion) you have separated yourself from the source again (we're so great at that, all of us ) by creating or reinforcing a/the distortion between the self and other-selves.