Anyone see Irina Palm with Marianne Faithfull a few years ago? The plot centers on Marianne as the eponymous Irina, an unlikely sixty-something matron improbably giving handjobs through a Soho glory hole in order to save up money for an operation for her son/grandson/nephew (can't remember exactly which - delete as applicable). In the end she falls in love with Sergei who has taken a shine to her (as I recall) having road-tested her supposedly surprisingly silky skills in this department.