Have a 4 y/o Lhasa never around kids....loves adults that visit but...?

A lot of smaller dogs are very nervous of young kids, particularly dogs who aren't used to kids and have been babied. You realize you can't allow this behaviour. It definitely will escalate and she will bite one day. If you can't take her to obedience, you need to teach her yourself. A dog can never be allowed to growl at a person, adult or child. Keep her beside you in a sit stay and tell any kids to ignore her - no eye contact, no talking to her, no trying to pet her. Let her go up to them if she's ok with it and make sure the kids know how to treat the dog. Do not tolerate even one growl.