Thanks! You all helped us a lot!! You are right Laura's mommy, IF there is a heart problem, it should be detected as soon as possible. I would NEVER forgive myself if we find out a few years later that her heart could have been treated . I think that the decision will be to have that echo anyway, and then decide on her being spayed already or not.
I have NO idea how much a heart echo costs here, but that is not an issue for me. Luckily we don't have financial problems at all

I will discuss the pro's and contra's with my hubby