Hi, thank you for your question. Just a bit more information required to fully assist you:
-Are you in England or Wales?
-Why is the mother threatening you?
-Are there any court orders in place, if so what?
Thank you - how long have you been with you girlfriend and do you envisage it to be a long-term relationship?
Thank you - and is the mother opposed to her having any contact at all or just to assist with the handover?
Thank you for confirming. It is not reasonable for the mother to attempt to impose such a restriction, especially as your partner is fully involved and present in the actual contact itself. You should therefore write to her to inform that it is necessary, due to your other commitments for your partner to assist in the handover - and you could propose that if she does not wish for your partner to return him, then the mother can attend to collect him.
Furthermore, given the distance in travel for contact, if you have not already factored it in to the child maintenance you are paying, you would have ground to reduce the maintenance you pay to take into account the cost of fuel to travel for handover - so long as the fuel cost is at least £10 a week.
I hope this assists you. If you found this information helpful please provide a positive rating using the stars at the top of this page. I will not be credited for your question without a positive rating. Thank you