• If the aim is to have a single chainring up front, 10 speed would give her a good range of gear without having a large jump between each cog.

    e.g.

    11-34 with a 44t chainring, 32-100GI.

    If she need a lower gearing, a 11-36 with a 42t cassette would work for the majority of ride, I would not recommend a wide 8 speed transmission as the jump is far greater with a 11-32.

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