i am in exactly the same boat, i was made redundant when on maternity leave as my position no longer was available. i then applied for several other jobs only to be told that i didnt have enough experience, they were similar jobs to what i have already been doing for the last 5 and a half years and i even found out twp other candidates with less than 6 months experience got through.
The employer doesnt have to offer the position to the person on maternity leave first, it is open to all canidates or so i found out.
I asked for written confirmation 10 times before my employer gave me a load of bull SH!^ basically why i didnt get the job, when it was pretty obvious its because i was on Mat levae.
Un;ess ypur daughter can prove that she was directly discriminated against due to being off(believe me its hard , i hav been trying) then unfortunatly it is a waste of time to pursue it as tribunals can take years for very little outcome.
i completley simpathise with your daughter as i am in exactly the same situation