Was a grandchild a beneficiary in grandparents will?

family355

Update...

Mum-She has reported to sister that she has not seen the will, Uncle J phoned her to tell her she was not in it at all and he could read it out to her. She declined. Uncle J told her, sister had replaced her Share in the house. Mum reports she still speaks with Uncle J regularly and he is her next of kin. 

Step grandfather-sister still has a good relationship with him so asked if he had seen the will. Step grandfather advised he could not help, he has not seen the will however Uncle S had told him sister had replaced mum in her Share of the house.

Uncle J-wall of silence, sister has tried to contact him with no response. 

Solicitor X-Returned sisters call and specified Uncle J is the executor and she needs to contact him. (Sister approached another firm who advised they could not help) 

Cousin-I have asked for a copy of the will several times to no avail. She reports she has seen it, There are a few contradictions from her too as she has previously said Sister had been given mums share now this...

House-Mum, Uncle J & Uncle S have a share of half the house, on the event of sister turning 21 (or 18-she has said previously?) And mum not being ‘normal’ mums share will go to Sister. (Mum has been in and out of psychiatric wards for the past 20 years) I cannot imagine this terminology could be used or enforced but I don’t know enough about law. 

She and her siblings now have their dads share. 

Land-Her mum (Uncle S’ widow) has received a ‘proposal letter’ for the land to be sold (est 300k but could be much more with planning Permission)
Uncle J & S are named on the restriction as my earlier post with the proprietors extended family members. Cousin states it is only her dad and Uncle J with this share. 

I have found a Solicitor firm from STEP as advised previously, My question is, Is sister asking them to write to Uncle J for more information/a copy of the will or does this make no difference anyway until step grandfathers house is sold?

I cannot help feeling there is something more to this at the detriment of sister but unsure what?